Proteogenomic Analysis of Trichophyton rubrum Aided by RNA Sequencing

Area of Science:

• Mycology
• Genomics
• Proteomics

Background:

• Dermatophyte infections, particularly those caused by Trichophyton rubrum, are highly prevalent human diseases.
• Accurate genome annotation is crucial for understanding fungal biology and developing targeted therapies.

Purpose of the Study:

• To perform a comprehensive proteogenomic analysis of Trichophyton rubrum.
• To improve and validate the existing genome annotation of T. rubrum using experimental evidence.

Main Methods:

• Whole-genome proteomics and RNA-Seq were employed for proteogenomic analysis.
• Identification and validation of expressed proteins and novel peptides.
• Manual curation of gene models based on transcriptomic data.

Main Results:

• 4291 expressed proteins were confirmed, with gene structures validated by 35,874 peptides.
• 323 novel peptides were identified, leading to the discovery of 104 new predicted genes.
• 95% of total peptides were validated by RNA-Seq, and 127 conflicting gene models were resolved.

Conclusions:

• This study provides the first experimental evidence-based survey of T. rubrum genome annotations.
• The integrated proteogenomic approach significantly refines genome annotation accuracy.
• Findings enhance the understanding of T. rubrum's genetic makeup, aiding future research and therapeutic development.